The president and CEO of Douglasville-based GreyStone Power Corp. will take over as the chairman of the WellStar board of trustees on July 1.

Gary Miller, a certified public accountant with a law degree from Georgia State University, has worked at GreyStone for 20 years and has been on the WellStar board for 11 years.

“Over the years, I have seen the impact WellStar has on our community,” Miller said, adding he will continue to work with the board and WellStar leadership to build on the vision for the system — “to deliver world-class health care.”

Miller will take over for current chair Janie Maddox, whose two year term expires this year. Maddox will remain a board member.

“WellStar is fortunate to have an active board of trustees,” Maddox said. “Gary Miller’s wealth of experience from a corporate and community perspective will continue to be a great asset to our system and the five counties WellStar serves.”

Along with Miller’s appointment, Dr. David Hafner will become vice chair and then take over as chair when Miller’s term ends in 2016.

Hafner is a partner at Vascular Surgical Associates PC in Marietta and serves as the medical director of WellStar’s vascular lab. He is board certified in vascular surgery and a diplomat of the American Board of Surgery.

Three new members join board

WellStar Health System also announced three new members will join the board.

- O. Scott Swayze, M.D. is a board certified orthopedic surgeon and president of Pinnacle Orthopaedics and Sports Medicine LLC, which opened in Marietta in 1992 to specialize in surgery of the hip and knee.

Swayze earned an undergraduate degree in biomedical engineering from Vanderbilt University and an M.D. from the University of Mississippi. His orthopaedic training was completed at Emory University;

- Mitzi Moore, who is the president, owner and co-founder of Sundial Plumbing in Marietta, has more than 23 years of experience emphasizing business development and leadership in the plumbing contract industry.

She serves on numerous boards, including Kennesaw State University and Chattahoochee Technical College; and

- Greg Morgan, the partner-in-charge of the Atlanta office of Mauldin & Jenkins LLC, is a certified public accountant and graduate of Georgia Southern University. Morgan is a previous chairman of the Cobb County Chamber of Commerce.

WellStar is the largest nonprofit health system in Georgia and serves a population of more than 1.4 million residents in five counties. Its hospitals include WellStar Douglas in Douglasville, and WellStar Paulding in Hiram.

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